tireheight.com

295/45R20 in inches

A 295/45R20 tire is 30.5″ tall and 11.6″ wide, and fits a 20″ wheel. In inches it is written 30.5×11.6R20.

Diameter30.45″
Width11.61″
Sidewall5.23″
295/45R20 drawn to scale: 30.45 inch diameter, 5.23 inch sidewall, 20 inch wheel, 11.61 inch tread width20″ wheel5.23″30.45″ overall11.61″ wideSide view
Drawn to scale. Nominal dimensions calculated from the size code.
Manufacturer data

How tall 295/45R20 tires really are

Heights published by General, Michelin and Toyo for all 4 tires in this size. Their published revolutions per mile work out to 29.5–29.6″ under load (below).

Real 295/45R20 tires measure 30.47–30.50″, against 30.45″ from the size code. They run both taller and shorter than the size code.

Height under load29.5–29.6″

Published revs per mile (682–683) mean the tire rolls like a 29.5–29.6″ tire on the vehicle. Use this for speedometer calibration.

Weight spread32.7–37.9 lb

The lightest (Michelin Pilot Sport All-Season 4, XL) is 5.2 lb lighter per corner than the heaviest (Toyo Proxes ST III, XL).

4 tires in 295/45R20

Sort by the spec you care about.

LoadRevs/miSource
Michelin Pilot Sport All-Season 4PerformanceXL · 114Y30.5032.710.02,601683Spec page
Michelin Pilot Alpin 5WinterXL · 114V30.4734.810.52,601683Spec page
General G-MAX AS07PerformanceXL · 114V30.5035.811.02,601682Spec page
Toyo Proxes ST IIIPerformanceXL · 114V30.4737.910.12,601682Spec page

Is 295/45R20 a 30-inch tire?

≈30″

Close. The size code works out to 30.45″, and the 4 tires here publish 30.47–30.50″, so people call it a 30.

All 30-inch tire sizes, on every wheel size.

Compare with nearby sizes

Differences in overall diameter, calculated from each size code.

SizeDiameter ″vs 295/45R20Difference
275/45R2029.74-0.71″-2.3%
255/50R2030.04-0.41″-1.4%
285/45R2030.10-0.35″-1.2%
235/55R2030.18-0.28″-0.9%
265/50R2030.43-0.02″-0.1%
305/45R2030.81+0.35″+1.2%
275/50R2030.83+0.37″+1.2%
255/55R2031.04+0.59″+1.9%
235/60R2031.10+0.65″+2.1%
285/50R2031.22+0.77″+2.5%

How to read 295/45R20

How to read any tire size

295/45R20 114V as printed on the tire sidewall, with each part numbered295/45R20 114V123456
How 295/45R20 114V is printed on the sidewall. It's the most common code among the 4 tires here (3 of them); tires in this size come in other load and speed ratings too.
1295Section width

295 mm across the widest point, or 11.61 inches. Every 295 size

245Aspect ratio

A percentage, not a measurement: the sidewall is 45% as tall as the tire is wide, which is 132.8 mm or 5.23 inches.

3RConstruction

Radial construction.

420Wheel diameter

Mounts on a 20-inch wheel. Approved wheel widths run 9.5″ to 11.0″.

5114Load index

Each tire carries up to 2,601 lb (1,180 kg) at its maximum pressure.

6VSpeed rating

Rated for up to 149 mph sustained.

XLExtra load

Printed after the size.

SpecificationInchesMetric
Overall diameter30.45774 mm
Section width11.61295 mm
Sidewall height5.23132.8 mm
Circumference95.72,430 mm
Revolutions per mile (calculated, unloaded)662.3412 per km
Revolutions per mile (published by manufacturers)682–683424 per km
Approved wheel width9.5–11.0241–279 mm

Speedometer error after switching to 295/45R20

Your actual speed– mph

Questions about 295/45R20

What is 295/45R20 in inches?

30.45 inches tall, 11.61 inches wide, on a 20-inch wheel. Written in inches, that is roughly 30.5×11.6R20.

How much does a 295/45R20 tire weigh?

Between 32.7 lb and 37.9 lb for the 4 tires listed here. The lightest is the Michelin Pilot Sport All-Season 4 (XL); the heaviest is the Toyo Proxes ST III (XL).

What wheel width do I need for 295/45R20?

Manufacturers approve 9.5–11.0″ wide wheels for this size.

How many revolutions per mile does a 295/45R20 make?

Published figures run 682–683 revolutions per mile. The calculated figure is 662.3, but manufacturers measure the tire under load, where it rolls on a smaller radius.

How much taller is 295/45R20 than 265/50R20?

0.02 inches taller on paper (30.45″ vs 30.43″), which raises the axle about 0.01″. Your speedometer will read about 0.1% slow.